lady, that i had a chance to travel with her. she had described it afterwards it was one of the most serious health scares she ever had because of a blood clot behind her knee. do we suspect, because it happened once before, it could re-occur time and time again, especially if you travel? >> absolutely. i remember that as well, suzanne. what you're describing is the first time that she had one of these blood clots. if you've had one before, you are at higher risk of having one again. if you add into that the traveling, which people are sitting, and they have their legs bent, and that reduces blood flow around the legs. that could put you at risk. also, after this concussion, one of the things she was told was to take it easy. you and i both know that's not an easy thing for her to do, but if she was taking it easy, lying around, that could put you at increased risk for blood clot as well of all of those things potentially increase the risk. the treatment again, these blood thinners, they usually do the trick. >> we wish her a good recovery.